Re: Cylinder leakage test
Yes, a NA engine with tight end gaps should test better than 10% on a warm engine a cold engine will read slightly more leak down. A large gap nitrous or blower engine will leak more cold. What I do is leak my engines on the stand when fresh right after taking them off the dyno cold, save those numbers. Then you have a baseline, when leakage starts to increase, I know it is time to save my pennies for a rebuild. I don't race class just bracket and index, but I see very little loss in ET until leakage gets about 30%
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